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ADM8697 Arkusz danych(PDF) 2 Page - Analog Devices

Numer części ADM8697
Szczegółowy opis  Microprocessor Supervisory Circuits
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ADM8697 Arkusz danych(HTML) 2 Page - Analog Devices

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ADM8696/ADM8697–SPECIFICATIONS
Parameter
Min
Typ
Max
Units
Test Conditions/Comments
VCC Operating Voltage Range
3.0
5.5
V
VBATT Operating Voltage Range
2.0
VCC – 0 3
V
BATTERY BACKUP SWITCHING (ADM8696)
VOUT Output Voltage
VCC – 0.005
VCC – 0.0025
V
IOUT = 1 mA
VCC – 0.2
VCC – 0.125
V
IOUT ≤ 100 mA
VOUT in Battery Backup Mode
VBATT – 0.005 VBATT – 0.002
V
IOUT = 250 µA, VCC < VBATT – 0.2 V
Supply Current (Excludes IOUT)
115
200
µAI
OUT = 100 mA
Supply Current in Battery Backup Mode
0.4
1
µAV
CC = 0 V, VBATT = 2.8 V
Battery Standby Current
5.5 V > VCC > VBATT + 0.2 V
(+ = Discharge, – = Charge)
–0.1
+0.02
µA
Battery Switchover Threshold
70
mV
Power-Up
VCC – VBATT
50
mV
Power-Down
Battery Switchover Hysteresis
20
mV
BATT ON Output Voltage
0.3
V
ISINK = 3.2 mA
BATT ON Output Short Circuit Current
30
mA
BATT ON = VOUT = 2.4 V Sink Current
0.5
2.5
25
µA
BATT ON = VOUT, VCC = 0 V, Source Current
RESET AND WATCHDOG TIMER
Low Line Threshold (LLIN)
1.25
1.3
1.35
V
Reset Timeout Delay
35
50
70
ms
OSC SEL = HIGH
Watchdog Timeout Period, Internal Oscillator
1.0
1.6
2.25
s
Long Period
70
100
140
ms
Short Period
Watchdog Timeout Period, External Clock
4032
4063
4097
Cycles
Long Period
960
1011
1025
Cycles
Short Period
Minimum WDI Input Pulse Width
50
ns
VIL = 0.8, VIH = 3.75 V, VCC = 5 V
100
ns
VIL = 0.8, VIH = 3.5 V, VCC = 5 V
100
ns
VIL = 0.8, VIH = 2.6 V, VCC = 3 V
RESET Output Voltage @ VCC = +1 V
4
20
mV
ISINK = 10 µA, VCC = 1 V
RESET,
RESET Output Voltage
0.1
0.4
V
ISINK = 400 µA, VCC = 2 V, VBATT = 0 V
0.1
0.4
V
ISINK = 3.2 mA, 3 V < VCC < 5.5 V
3.5
V
ISOURCE = 1 µA, VCC = 5 V
2.7
V
ISOURCE = 1 µA, VCC = 3 V
LOW LINE, WDO Output Voltage
0.4
V
ISINK = 3.2 mA,
3.5
V
ISOURCE = 1 µA, VCC = 5 V
2.7
V
ISOURCE = 1 µA, VCC = 3 V
Output Short Circuit Source Current
1
10
25
µAV
CC = 5 V
WDI Input Threshold
1
Logic Low
0.8
V
Logic High
3.5
V
VCC = 5 V
1.2
V
VCC = 3 V
WDI Input Current
1
10
µA
WD1 = VOUT, (VCC)
–10
–1
µA
WD1 = 0 V
POWER FAIL DETECTOR
PFI Input Threshold
1.2
1.3
1.4
V
PFI–LLIN Threshold Difference
–50
±15
+50
mV
PFI Input Current
–25
±0.01
+25
nA
LLIN Input Current
–50
±0.01
+50
nA
PFO Output Voltage
0.4
V
ISINK = 3.2 mA
3.5
V
ISOURCE = 1 µA
2.7
V
ISOURCE = 1 µA, VCC = 3 V
PFO Short Circuit Source Current
1
10
25
µA
PFI = Low,
PFO = 0 V
CHIP ENABLE GATING (ADM8697)
CEIN Threshold
0.8
V
VIL
3.0
V
VIH
1.2
V
VCC = 3 V
CEIN Pull-Up Current
3
µA
CEOUT Output Voltage
0.4
V
ISINK = 3.2 mA
VCC – 0.5
V
ISOURCE = 800 µA
CE Propagation Delay
2
7
ns
VCC = 5.0 V
4ns
VCC = 3.0 V
OSCILLATOR
OSC IN Input Current
±2
µA
OSC SEL Input Pull-Up Current
5
µA
OSC IN Frequency Range
0
500
kHz
OSC SEL = 0 V
OSC IN Frequency with Ext. Capacitor
4
kHz
OSC SEL = 0 V, COSC = 47 pF
NOTE
1WDI is a three-level input internally biased to 38% of V
CC and has an input impedance of approximately 5 M Ω.
Specifications subject to change without notice.
–2–
(VCC = Full Operating Range, VBATT = +2.8 V, TA = TMIN to TMAX
unless otherwise noted.)
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